River in curved channel, due to an encounter with gabion mesh cage or gabion mesh pad, rivers will turn down the natural river flow can secure boot river.

In this paper a turbulent curved channel flow was studied with the direct numerical simulation. The main objective way to investigate the influence of curvature on the turbulence.

The model is applied to forecast the variation process of main stream direction, cross section and channel slope of a conceptualized curved river under the erosion of clear water.